Earring back



FIG. 1 is a perspective view of my new design for an earring back;

FIG. 2 is a bottom view of the new design;

FIG. 3 is a top view of the new design;

FIG. 4 is a side view of the new design;

FIG. 5 is a side view of the new design from the opposite side from the view depicted in FIG. 4.

FIG. 6 is a side view of the new design oriented 90 degrees from the view depicted in FIG. 5; and,

FIG. 7 is a side view of the new design from the opposite side or 180 degrees from the view depicted in FIG. 6.

The solid lines shown within the outline of the body of the earring back element in FIGS. 1-7 are features of the design. All surface ornamentation depicted in the figures such as shading and reflections is disclaimed and forms no part of the claimed design. 

The ornamental design for an earring back, as shown and described. 